Answer:
The environment is a key player in the contagion of communicable diseases because this kind of disease can go from one person to another by different mediums so if the environment has medium to transmit these diseases it will be a big contributor.
Step-by-step explanation:
First of all, we need to understand something communicable diseases can travel through the air, water, Saliba, etc. So if the environment has an open way for these diseases to travel it will propitiate the contagion of that disease. Let's think about wuhan coronavirus, that virus travels through the air in a space of thirteen feet. So, if someone with the virus sneezes at a distance of thirteen feet from you. Well, there is a high chance of the virus reaching you. now, if the environment has a barrier between you and that person it is impossible. But if you have not a face mask, a suit, gloves, or that person doesn't use any barrier well the virus is going to reach you. Also, if the environment has wind currents the virus will reach a farther distance.